Avast Cleanup Premium

I have an issue with constant hard drive activity that lasts for maybe 5 mins whenever i boot up my PC. I believe that Avast Clean Up may be the cause BUT I cannot disable it.
Looking at posts on this forum it seems that this is a universal problem.
If I uninstall it will the license remain so that I can reinstall it again at a later date?
It also seems that Avast are not interested in resolving the issue of being able to turn it off.

Hello,

regarding the option to disable the Cleanup, let me inform you that we are already working on a new set of settings which will allow you to control whether you want to keep both Cleanup service and the UI process running when you close the actual Avast Cleanup window. This will give you full control about the product and when you would like to run it.
We should have it ready in about a month from now so please bear with us here and we will deliver this functionality in the very next version of Avast Cleanup.

Thank you.

Hi,

Your license will be valid until its expiration date (whether installed or not).
Please see these guides for:
Uninstall: https://support.avast.com/en-ww/article/Uninstall-Cleanup/
Install: https://support.avast.com/en-ww/article/46/
Re-Activate: https://support.avast.com/en-ww/article/73/

Hello,

regarding the option to disable the Cleanup, let me inform you that we are already working on a new set of settings which will allow you to control whether you want to keep both Cleanup service and the UI process running when you close the actual Avast Cleanup window. This will give you full control about the product and when you would like to run it.
We should have it ready in about a month from now so please bear with us here and we will deliver this functionality in the very next version of Avast Cleanup.

Thank you.